Chase — Notes on Genera of Panicese. II 7 



Panicum aquaticum Bosc ex Sprang. 1825, Syst. 1 : 319. ' ' Ins. Bermud. ' ' 

 A duplicate type was seen in the Webb herbarium in Florence. 

 Sacciolepis gibba (Ell.) Nash 1901, Britt. Man. 89. (See above. ) 



Sacciolepis myuros (Lam.) 



Panicum myuros Lam. 1791, Tab. Enc. 1 : 172. ( Misprinted " myruos," 

 but corrected in Enc. 4: 748.) "Ex America merid. Comm. a D. Rich- 

 ard." The type in the Lamarck herbarium in Paris 

 is labeled in Lamarck's handwriting " de Cayenne 

 Leblond Panicum myuros lam. ill. gen." In the 

 Encyclopedic (4: 748) the specimen is said to come 

 from Cayenne, communicated by Richard and Le- 

 1 )1< >nd. 



FiR. 3. Since this species has been so generally misunder- 



Sacciolepis myuros. stood a sp ikelet from the type is illustrated here to 

 show the generic relationship. 



Panicum myosurus Rich. 1792, Act. Soc. Hist. Nat. Par. 1 : 106. No 

 specimen is cited, but the name is published with a brief diagnosis in a 

 "Catalogue plantarum * * * e Cayenna missarum a Domino Le Blond." 

 The type is in the Paris herbarium. It is a somewhat larger specimen 

 than the preceding type. 



This species is represented in the National Herbarium by Liebmann 

 Mex. Gram. No. 146. 



Wanicum phleiforme Presl 1830, Rel. Haenk. 1 : 302. "Hab. in Mexico." 

 There are two specimens on the sheet labeled " Panicum phleiforme nov. 

 sp. J. S. Presl" in the National Museum at Prag, one ticketed Mexico, 

 the other Luzon. The Mexico specimen is small and slender, but may be 

 referable to S. myuros; the spikelets agree with those of Lamarck's speci- 

 men, except that they are less acute. Pringle 2363, Jalisco, Mex., dis- 

 tributed as P. indicum L., seems to be the same as Presl's specimen. 

 More material may show this form to be distinct. 



Sacciolepis vilvoides (Trim). 



Panicum vilvoides Trin. 1S2<>, Gram. Pan. 171. " Hymenachne fluvia- 

 tilis N. ab Es! in Mart. Fl. Bras. ined. V. spp. Gujan. Brasil. (Fischer 

 X. ab EsExii. )" In the Trinius herbarium there are two specimens in 

 the cover marked "Panicum vilvoides m." One is labeled "Panicum 

 vilvoides m. Hymenachne fluviatilis N. abEs. sub quo nom. mis in Brasil. 

 lectu an. N. ab." The other is labeled "Panicum (Hymenachne) vil- 

 voides Trin. Guyaii francaise." Fischer's name does not appear on either. 

 Since Trinius indicated by "in " or "mihi" the specimen he named, the 

 first specimen mentioned above may be taken as the type. The second 

 specimen is S. myuros. 



Hymenachne fluviatilis Xees 182)5, in Trin. (1. c.) as synonym sub Pani- 

 cum vilvoides Trin. 1S29, Fl. Bras. 273 " Panicum vilvoides Trin. in litt., 

 ex Herb. el. Fischeri." is cited. 



This species is represented in the National Herbarium by Ed-wall 1066 

 S. Paulo, Brasil. Other specimens apparently belonging to the same species 

 have spikelets hirsute at the summit. 



